Sampling device for monitoring water pollution

Abstract

According to the sampling device for water pollution monitoring, the sampling device is applied to the technical field of water pollution monitoring, the depth positioning piece and the fixing piece are arranged, the multiple electromagnetic rings are arranged on the connecting rope, the corresponding electromagnetic rings are opened according to the sampling depth, and when the sampling barrel passes through the electrified electromagnetic rings, the electromagnetic rings generate adsorption force on the permanent magnets, so that the sampling barrel is fixed; according to the sampling device, a sliding plate is arranged to drive a sliding seat to move on the sliding plate, so that the sliding seat and a permanent magnet move towards an electromagnetic ring, the electromagnetic ring is clamped, a sampling barrel is fixed to a connecting rope, and the sampling depth is adjusted; the sampling piece is arranged, a Y-shaped plate and a piston are driven to move downwards through elasticity of a first spring, and a water inlet hole and a sliding hole are opened for sampling; when the piston moves downwards to the bottom of the sampling barrel, the upper sealing plug and the upper sealing plug respectively block the water inlet hole and the sliding hole at the moment, and the sampling barrel after sampling is completed is sealed, so that water samples with different depths can be prevented from being mixed into the sampling barrel after the sampling is completed, and the purity and the accuracy of the collected water samples are ensured.

Description

Technical Field

[0001] The present application relates to the technical field of water pollution monitoring, and in particular to a sampling device for water pollution monitoring. Background Art

[0002] With the progress and development of society, human beings are increasingly polluting water, which also affects people's normal lives. Common water pollution in rivers, lakes and ponds is mostly caused by the discharge of various sewage that does not meet the standards, especially the indiscriminate discharge of some industrial sewage, which causes great pollution to the surface water quality. Therefore, it is particularly important to be able to timely grasp whether various types of sewage meet the corresponding discharge standards. However, in order to obtain accurate sewage parameters, the method of sewage sampling must be mastered in water quality testing.

[0003] In the prior art, when sampling, a long rope is often tied to a sampling bucket, and then the sampling bucket is placed in the water after arriving at the sampling location by boat. After standing for a period of time, the sampling bucket in the water is lifted up to collect water samples. However, in the process of collecting water samples, on the one hand, the sampling depth cannot be accurately adjusted, so it is difficult for the sampling bucket to reach the precise underwater depth for water sample collection. On the other hand, since the sampling bucket is empty before sampling and there is air inside, the sampling bucket sinks slowly due to the buoyancy of the air, thereby slowing down the sampling speed. In addition, since the sampling bucket passes through waters of different depths during the descent and ascent, most sampling buckets are open for the convenience of sampling and lack good sealing. Therefore, some water from other deep waters will be mixed into the collected water samples during the ascent and descent, resulting in poor accuracy of the collected water samples, which will further affect the accuracy of water sample detection.

[0004] To this end, we propose a sampling device for water pollution monitoring to solve the above problems. Summary of the invention

[0005] 1. Technical issues to be solved In response to the problems existing in the prior art, the purpose of this application is to accurately adjust the sampling depth to achieve accurate sampling, avoid the presence of air in the sampling barrel and slow down the sampling efficiency, and at the same time seal the sampling barrel to avoid the mixing of water from other depths during the water sample collection process, thereby improving the accuracy of sampling. Compared with the prior art, a sampling device for water pollution monitoring is provided. By setting a depth positioning part and a fixing part, the position of the sampling barrel is fixed in water at different depths to achieve the adjustment of the sampling depth. By setting a sampling part, the sampling barrel is set to a vacuum, and water samples are automatically collected after fixation. After the water sample is collected, the sampling barrel is sealed to ensure the purity and accuracy of the collected water sample.

[0006] 2. Technical solution In order to solve the above technical problems, the present invention adopts the following technical solutions.

[0007] A sampling device for water pollution monitoring, comprising a floating plate and a handle fixedly connected to the top of the floating plate, a depth positioning piece is arranged below the floating plate, a sampling piece is arranged on the depth positioning piece, a fixing piece is arranged on the sampling piece, and a supporting piece is arranged between the sampling piece and the fixing piece; The depth positioning member comprises a connecting rope, an electromagnetic ring and a gravity ball; The connecting rope is fixedly connected to the bottom of the floating plate, and there are multiple connecting ropes evenly distributed at the bottom of the floating plate. The electromagnetic ring is fixedly sleeved on the outside of the connecting rope, and multiple electromagnetic rings are sleeved on one connecting rope. The gravity ball is fixedly connected to the end of the connecting rope away from the floating plate.

[0008] Further, the sampling member includes a sampling barrel, a connecting plate, a telescopic rod, a Y-shaped plate, a spring, a water inlet hole, an upper sealing plug, a piston, a lower sealing plug, a sliding hole, a lower sealing plug, an upper sealing plug, a connecting rod and a counterweight; The sampling barrel is located on the inner side of multiple connecting ropes, the connecting plate is fixedly connected to the outer wall of the sampling barrel, the connecting plates are provided with multiple and are spaced apart from the multiple connecting ropes, the lower end of the telescopic rod is fixedly connected to the connecting plate, the upper end of the telescopic rod is fixedly connected to the Y-shaped plate, a set of springs is arranged on the outer side of the telescopic rod and fixedly connected between the connecting plate and the Y-shaped plate, the water inlet hole is opened at the top of the sampling barrel, the upper sealing plug is fixedly connected to the bottom of the Y-shaped plate, the piston is sealingly and slidingly connected to the inner wall of the sampling barrel, the lower sealing plug is fixedly connected to the upper surface of the piston, the sliding hole is opened in the middle of the top of the sampling barrel, the lower sealing plug is fixedly connected to the middle position of the upper surface of the piston, the upper sealing plug is fixedly connected to the middle position of the bottom of the Y-shaped plate, the connecting rod is fixedly connected between the lower sealing plug and the upper sealing plug, and the counterweight is fixedly connected to the bottom of the sampling barrel.

[0009] Furthermore, the water inlet hole, upper sealing plug and lower sealing plug are each provided in multiple and their positions correspond one to one. The upper sealing plug and lower sealing plug are both made of rubber, and their outer diameters match the inner diameter of the water inlet hole.

[0010] Furthermore, the upper sealing plug and the lower sealing plug are both made of rubber, and the outer diameters of the upper sealing plug and the lower sealing plug match the inner diameter of the sliding hole.

[0011] Furthermore, a water outlet is provided on the piston, and a sealing cover is threadedly connected below the water outlet.

[0012] Further, the fixing member includes a slide plate, a slide groove, a slider, a slide seat, a permanent magnet, a baffle and a spring; The slide plate is fixedly connected to the outer wall of the sampling barrel, the slide groove is opened on the slide plate, the slider is slidably connected to the slide groove, the slide seat is fixedly connected to the slider, two slide seats are provided and are symmetrically arranged, the permanent magnet is fixedly connected to the side where the two slide seats are close to each other, the baffle is fixedly connected to the end of the slide plate away from the slide seat, the second spring is fixedly connected between the baffle plate and the slide seat, and the electromagnetic ring has an opposite magnetic pole to the side where the permanent magnet is close to each other after being energized.

[0013] Furthermore, a limiting ring is fixedly connected to the outer wall of the sampling barrel, and the limiting ring is sleeved on the outer side of the connecting rope.

[0014] Further, the support member includes a lower support rod, an upper support rod, a lower clamping seat and an upper clamping seat; The lower support rod is rotatably connected to the upper surface of the sampling barrel, the upper support rod is rotatably connected to the lower surface of the Y-shaped plate, the lower clamping seat is fixedly connected to the top of the lower support rod, and the upper clamping seat is fixedly connected to the bottom of the upper support rod.

[0015] Furthermore, the lower clamping seat and the upper clamping seat are both made of rubber, and the lower clamping seat and the upper clamping seat are squeezed and clamped with each other.

[0016] Furthermore, the support member further comprises a starter member, and the starter member comprises an upper connecting ring, a lower connecting ring and a pull rope; The upper connecting ring is fixedly connected to the lower clamping seat, the lower connecting ring is fixedly connected to one of the sliding seats, and the pull rope is tied between the upper connecting ring and the lower connecting ring.

[0017] Compared with the prior art, the advantages of this application are: (1) By setting the depth positioning part and the fixing part, the corresponding electromagnetic ring is turned on according to the sampling depth. After the electromagnetic ring is energized, the magnetic pole is opposite to the magnetic pole of the permanent magnet that is close to each other. The electromagnetic ring generates an adsorption force on the permanent magnet, driving the slide to move on the slide, so that the slide and the permanent magnet move toward the electromagnetic ring, clamping the electromagnetic ring, thereby fixing the sampling barrel on the connecting rope, and realizing the adjustment of the sampling depth.

[0018] (2) By providing a support member, the mutual compression between the lower clamping seat and the upper clamping seat made of rubber material generates friction, so that the lower support rod and the upper support rod are clamped together and maintained in an upright state, supporting the Y-shaped plate, so that the piston is located at the top of the sampling barrel before sampling, so that the sampling barrel maintains a vacuum state before sampling, which can prevent water from entering the sampling barrel during movement and facilitate the sinking of the sampling barrel.

[0019] (3) By setting a starting member, the slide will pull the pull rope during the movement, and the pull rope will pull the lower clamping seat. The lower clamping seat will rotate after being pulled, so that the lower clamping seat is separated from the upper clamping seat, and the Y-shaped plate loses its support and moves downward under the elastic action of spring 1, and automatically opens for sampling.

[0020] (4) By setting a sampling piece, before sampling, the support piece supports the Y-shaped plate so that the sampling barrel maintains a vacuum state. When sampling, the Y-shaped plate loses the support of the support piece, the spring contracts, and the Y-shaped plate moves downward under the action of the spring elasticity. The Y-shaped plate drives the lower sealing plug, the connecting rod, and the upper sealing plug to move downward, thereby driving the piston to move downward. The downward movement of the piston drives the lower sealing plug to leave the water inlet hole. After the sampling barrel is fixed, it is automatically opened for sampling. Since the lower sealing plug and the upper sealing plug are connected by a connecting rod, water can also enter the sampling barrel from the sliding hole during the sampling process, thereby improving the sampling efficiency. When the piston moves down to the bottom of the sampling barrel, the upper sealing plug enters the water inlet hole to seal the water inlet hole, and the upper sealing plug enters the sliding hole to seal the sliding hole, thereby sealing the sampling barrel after sampling is completed, which can prevent the sampling barrel from being mixed with water samples of different depths after sampling is completed, thereby ensuring the purity and accuracy of the collected water samples.

[0021] (5) By setting the upper sealing plug, lower sealing plug, upper sealing plug and lower sealing plug made of rubber material, the upper sealing plug, lower sealing plug and upper sealing plug and lower sealing plug can respectively seal the water inlet hole and the sliding hole before and after sampling, thereby preventing the sampling barrel from entering water at other depths during the up and down movement before and after sampling, thereby ensuring the accuracy of water sample collection.

[0022] (6) By setting a gravity ball on the connecting rope and a counterweight block at the bottom of the sampling bucket, the gravity ball can drive the connecting rope to sink quickly and straighten in the water, which is convenient for the sampling bucket to sink and sample. The counterweight block can drive the sampling bucket to sink quickly for sampling, thereby improving the sampling efficiency.

[0023] (7) By providing a limiting ring on the outer wall of the sampling barrel, the position of the sampling barrel can be limited, so that the sampling barrel can move smoothly up and down on the connecting rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the sampling component and the fixing component structure of this application; Figure 3 It is a schematic diagram of a partial cross-sectional structure of the sampling piece of the present application; Figure 4 This is a schematic diagram of the piston structure of this application; Figure 5This is a schematic diagram of the fixing structure of the present application; Figure 6 For this application Figure 2 A partial enlarged view of the structure at center A; Figure 7 For this application Figure 2 A partial enlarged view of the structure at point B in the middle.

[0025] Description of the numbers in the figure: 1. Floating plate; 2. Handle; 3. Depth positioning piece; 301. Connecting rope; 302. Electromagnetic ring; 303. Gravity ball; 4. Sampling piece; 401. Sampling bucket; 402. Connecting plate; 403. Telescopic rod; 404. Y-shaped plate; 405. Spring 1; 406. Water inlet hole; 407. Upper sealing plug; 408. Piston; 409. Lower sealing plug; 410. Sliding hole; 411. Lower sealing plug; 412. Upper sealing plug; 413. Connecting rod; 414. 4. Counterweight; 415. Limiting ring; 5. Fixing piece; 501. Slide plate; 502. Slide groove; 503. Sliding block; 504. Sliding seat; 505. Permanent magnet; 506. Baffle plate; 507. Spring 2; 6. Support piece; 601. Lower support rod; 602. Upper support rod; 603. Lower clamping seat; 604. Upper clamping seat; 7. Starting piece; 701. Upper connecting ring; 702. Lower connecting ring; 703. Pull rope; 8. Water outlet; 9. Sealing cover. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0027] Embodiment 1: The present invention provides a sampling device for water pollution monitoring, please refer to Figure 1-7 , including a floating board 1 and a handle 2 fixedly connected to the top of the floating board 1. Under the buoyancy of the floating board 1, the entire device can float on the water surface. A depth positioning member 3 is provided below the floating board 1 to control and adjust the sampling depth. A sampling member 4 is provided on the depth positioning member 3, and a fixing member 5 is provided on the sampling member 4. The device can be fixed by cooperating with the depth positioning member 3. A supporting member 6 is provided between the sampling member 4 and the fixing member 5; The depth positioning member 3 includes a connecting rope 301, an electromagnetic ring 302 and a gravity ball 303; the connecting rope 301 is fixedly connected to the bottom of the floating plate 1, and a plurality of connecting ropes 301 are arranged and evenly distributed at the bottom of the floating plate 1, the electromagnetic ring 302 is fixedly sleeved on the outside of the connecting rope 301, and a plurality of electromagnetic rings 302 are sleeved on one connecting rope 301, and the gravity ball 303 is fixedly connected to the end of the connecting rope 301 away from the floating plate 1. Under the action of the gravity ball 303, the connecting rope 301 can be driven to sink quickly and straighten in the water, which is convenient for the sinking sampling of the sampling bucket 401.

[0028] The sampling member 4 includes a sampling barrel 401, a connecting plate 402, a telescopic rod 403, a Y-shaped plate 404, a spring 405, a water inlet hole 406, an upper sealing plug 407, a piston 408, a lower sealing plug 409, a sliding hole 410, a lower sealing plug 411, an upper sealing plug 412, a connecting rod 413 and a counterweight 414; the sampling barrel 401 is located on the inner side of the plurality of connecting ropes 301, the connecting plate 402 is fixedly connected to the outer wall of the sampling barrel 401, the connecting plate 402 is provided with a plurality of connecting ropes 301 and is spaced apart from the plurality of connecting ropes 301, the lower end of the telescopic rod 403 is fixedly connected to the connecting plate 402, and the telescopic rod 403 is fixedly connected to the connecting plate 402. The upper end of the telescopic rod 403 is fixedly connected to the Y-shaped plate 404, the spring 405 is sleeved on the outer side of the telescopic rod 403 and fixedly connected between the connecting plate 402 and the Y-shaped plate 404, the water inlet hole 406 is opened at the top of the sampling barrel 401, the upper sealing plug 407 is fixedly connected to the bottom of the Y-shaped plate 404, the piston 408 is sealed and slidably connected to the inner wall of the sampling barrel 401, the lower sealing plug 409 is fixedly connected to the upper surface of the piston 408, the sliding hole 410 is opened in the middle of the top of the sampling barrel 401, the lower sealing plug 411 is fixedly connected to the middle position of the upper surface of the piston 408, and the upper sealing plug 412 is fixedly connected to the middle position of the bottom of the Y-shaped plate 404, the connecting rod 413 is fixedly connected between the lower sealing plug 411 and the upper sealing plug 412, the counterweight block 414 is fixedly connected to the bottom of the sampling bucket 401, and the counterweight block 414 can drive the sampling bucket 401 to sink quickly for sampling, the water inlet hole 406, the upper sealing plug 407 and the lower sealing plug 409 are all provided with multiple and the positions correspond one to one, the upper sealing plug 407 and the lower sealing plug 409 are made of rubber, and the outer diameters of the upper sealing plug 407 and the lower sealing plug 409 match the inner diameter of the water inlet hole 406, the upper sealing plug 4 The material of the upper sealing plug 412 and the lower sealing plug 411 are both rubber, and the outer diameters of the upper sealing plug 412 and the lower sealing plug 411 match the inner diameter of the sliding hole 410. The upper sealing plug 407 and the lower sealing plug 409 as well as the upper sealing plug 412 and the lower sealing plug 411 can respectively seal the water inlet 406 and the sliding hole 410 before and after sampling, so as to avoid water from other depths entering during the up and down movement of the sampling barrel before and after sampling, thereby ensuring the accuracy of water sampling. A water outlet 8 is provided on the piston 408, and a sealing cover 9 is threadedly connected to the lower part of the water outlet 8.

[0029] Specifically, before sampling, the support member 6 supports the Y-shaped plate 404, so that the sampling barrel 401 maintains a vacuum state. During sampling, the Y-shaped plate 404 loses the support of the support member 6, and the spring 1 405 contracts. Under the elastic action of the spring 1 405, the Y-shaped plate 404 moves downward, and the Y-shaped plate 404 drives the lower sealing plug 411, the connecting rod 413, and the upper sealing plug 412 to move downward, thereby driving the piston 408 to move downward. The piston 408 moves downward and drives the lower sealing plug 409 to leave the water inlet hole 406. After the sampling barrel is fixed, it is automatically opened for sampling. 11 is connected to the upper sealing plug 412 by a connecting rod 413, so during the sampling process, water can also enter the sampling barrel from the sliding hole 410, thereby improving the sampling efficiency. When the piston 408 moves down to the bottom of the sampling barrel 401, the upper sealing plug 407 enters the water inlet hole 406 to seal the water inlet hole 406, and the upper sealing plug 412 enters the sliding hole 410 to seal the sliding hole 410, thereby sealing the sampling barrel 401 after the sampling is completed, which can prevent the sampling barrel 401 from being mixed with water samples of different depths after the sampling is completed, thereby ensuring the purity and accuracy of the collected water samples.

[0030] The fixing member 5 includes a slide plate 501, a slide groove 502, a slider 503, a slide seat 504, a permanent magnet 505, a baffle 506 and a second spring 507; the slide plate 501 is fixedly connected to the outer wall of the sampling barrel 401, the slide groove 502 is arranged on the slide plate 501, the slider 503 is slidably connected to the slide groove 502, the slide seat 504 is fixedly connected to the slider 503, the slide seat 504 is provided with two and symmetrically arranged, the permanent magnet 505 is fixedly connected to the side where the two slide seats 504 are close to each other, the baffle 506 is fixedly connected to the end of the slide plate 501 away from the slide seat 504, the second spring 507 is fixedly connected between the baffle 506 and the slide seat 504, the outer wall of the sampling barrel 401 is fixedly connected to the limit ring 415, the limit ring 415 is sleeved on the outside of the connecting rope 301, and the limit ring 415 can limit the position of the sampling barrel 401, so that the sampling barrel 401 can move up and down smoothly on the connecting rope 301.

[0031] Specifically, the corresponding electromagnetic ring 302 is turned on according to the sampling depth. After the electromagnetic ring 302 is energized, its magnetic properties are opposite to the magnetic poles on the side of the permanent magnet 505 that are close to each other. The electromagnetic ring 302 generates an adsorption force on the permanent magnet 505, driving the slide 504 to move on the slide 501, so that the slide 504 and the permanent magnet 505 move toward the electromagnetic ring 302, clamping the electromagnetic ring 302, thereby fixing the sampling barrel 401 on the connecting rope 301, and realizing the adjustment of the sampling depth.

[0032] The support member 6 includes a lower support rod 601, an upper support rod 602, a lower clamping seat 603 and an upper clamping seat 604; the lower support rod 601 is rotatably connected to the upper surface of the sampling barrel 401, the upper support rod 602 is rotatably connected to the lower surface of the Y-shaped plate 404, the lower clamping seat 603 is fixedly connected to the top of the lower support rod 601, and the upper clamping seat 604 is fixedly connected to the bottom of the upper support rod 602. The lower clamping seat 603 and the upper clamping seat 604 are both made of rubber, and the lower clamping seat 603 and the upper clamping seat 604 are squeezed and clamped with each other.

[0033] Specifically, the mutual squeezing of the rubber-made lower clamping seat 603 and the upper clamping seat 604 will generate friction, so that the lower support rod 601 and the upper support rod 602 are clamped together and remain in an upright state, supporting the Y-shaped plate 404, so that the piston 408 is located at the top of the sampling barrel 401 before sampling, so that the sampling barrel 401 maintains a vacuum state before sampling, which can prevent the sampling barrel 401 from entering water during the movement and facilitate the sinking of the sampling barrel 401.

[0034] The support member 6 also includes a starting member 7, which includes an upper connecting ring 701, a lower connecting ring 702 and a pull rope 703; the upper connecting ring 701 is fixedly connected to the lower clamping seat 603, the lower connecting ring 702 is fixedly connected to one of the sliding seats 504, and the pull rope 703 is tied between the upper connecting ring 701 and the lower connecting ring 702.

[0035] Specifically, when the slide 504 moves, it will pull the pull rope 703, and the pull rope 703 will pull the lower clamping seat 603. After being pulled, the lower clamping seat 603 will rotate, thereby separating the lower clamping seat 603 from the upper clamping seat 604, and the Y-shaped plate 404 loses its support and moves downward under the elastic action of spring 1 405, and automatically opens for sampling.

[0036] Working principle: Before sampling, the device is placed on the surface of the water area to be sampled. Under the buoyancy of the floating plate 1, the entire device floats on the water surface. Under the action of the gravity ball 303, the connecting rope 301 is driven to sink rapidly in the water and straighten, which is convenient for the sampling bucket 401 to sink and sample. According to the sampling depth and through the remote control device (this is the prior art, not shown in the figure, and will not be explained in detail here), the electromagnetic ring 302 of the corresponding depth is selected to be turned on. The electromagnetic ring 302 is qualitatively connected to the power supply (this is the prior art, not shown in the figure, and will not be explained in detail here). Then, the sampling bucket 401 moves down along the connecting rope 301 and stops at the limit position. Under the limiting effect of the ring 415, the sampling barrel 401 can move smoothly on the connecting rope 301. During the movement of the sampling barrel 401, the friction force generated by the mutual squeezing between the lower clamping seat 603 and the upper clamping seat 604 made of rubber material causes the lower support rod 601 and the upper support rod 602 to be clamped together and maintain an upright state, supporting the Y-shaped plate 404, so that the piston 408 is located at the top of the sampling barrel 401 before sampling, so that the sampling barrel 401 maintains a vacuum state before sampling, which can prevent the sampling barrel 401 from entering water during the movement and facilitate the sinking of the sampling barrel 401. When the sampling barrel 401 passes through the energized electromagnetic ring 302, the electromagnetic ring 302 generates an adsorption force on the permanent magnet 505, driving the slide 504 to move on the slide 501, so that the slide 504 and the permanent magnet 505 move toward the electromagnetic ring 302, clamping the electromagnetic ring 302, thereby fixing the sampling barrel 401 on the connecting rope 301, and realizing the adjustment of the sampling depth; When the slide 504 moves, it will pull the pull rope 703, and the pull rope 703 will pull the lower clamping seat 603. After being pulled, the lower clamping seat 603 rotates, so that the lower clamping seat 603 is separated from the upper clamping seat 604, and the Y-shaped plate 404 loses its support. The spring 405 contracts and the Y-shaped plate 404 moves downward under the elastic action of the spring 405. The Y-shaped plate 404 drives the lower sealing plug 411, the connecting rod 413, and the upper sealing plug 412 to move downward, thereby driving the piston 408 to move downward. The piston 408 moves downward and drives the lower sealing plug 409 to leave the water inlet hole 406. After the sampling barrel is fixed, it is automatically opened for sampling. 11 is connected to the upper sealing plug 412 by a connecting rod 413. Therefore, during the sampling process, water can also enter the sampling barrel from the sliding hole 410, thereby improving the sampling efficiency. When the piston 408 moves down to the bottom of the sampling barrel 401, the upper sealing plug 407 enters the water inlet hole 406 to seal the water inlet hole 406, and the upper sealing plug 412 enters the sliding hole 410 to seal the sliding hole 410, thereby sealing the sampling barrel 401 after the sampling is completed, which can prevent the sampling barrel 401 from being mixed with water samples of different depths after the sampling is completed, thereby ensuring the purity and accuracy of the collected water samples. After the sampling is completed, the device can be taken out of the water by pulling the handle 2.

[0037] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and its improved conception, which should be covered by the protection scope of the present application.

Claims

1. A sampling device for water pollution monitoring, comprising a floating plate (1) and a handle (2) fixedly connected to the top of the floating plate (1), characterized in that: A depth positioning member (3) is provided below the floating plate (1), a sampling member (4) is provided on the depth positioning member (3), a fixing member (5) is provided on the sampling member (4), and a supporting member (6) is provided between the sampling member (4) and the fixing member (5); The depth positioning member (3) comprises a connecting rope (301), an electromagnetic ring (302) and a gravity ball (303); The connecting rope (301) is fixedly connected to the bottom of the floating plate (1), and a plurality of connecting ropes (301) are provided and evenly distributed at the bottom of the floating plate (1). The electromagnetic ring (302) is fixedly sleeved on the outside of the connecting rope (301), and a plurality of electromagnetic rings (302) are sleeved on one connecting rope (301). The gravity ball (303) is fixedly connected to one end of the connecting rope (301) away from the floating plate (1).

2. The sampling device for water pollution monitoring according to claim 1, characterized in that: The sampling member (4) comprises a sampling barrel (401), a connecting plate (402), a telescopic rod (403), a Y-shaped plate (404), a spring (405), a water inlet hole (406), an upper sealing plug (407), a piston (408), a lower sealing plug (409), a sliding hole (410), a lower sealing plug (411), an upper sealing plug (412), a connecting rod (413) and a counterweight (414); The sampling barrel (401) is located on the inner side of the plurality of connecting ropes (301); the connecting plate (402) is fixedly connected to the outer wall of the sampling barrel (401); a plurality of connecting plates (402) are provided and are spaced apart from the plurality of connecting ropes (301); the lower end of the telescopic rod (403) is fixedly connected to the connecting plate (402); the upper end of the telescopic rod (403) is fixedly connected to the Y-shaped plate (404); the spring (405) is sleeved on the outer side of the telescopic rod (403) and fixedly connected between the connecting plate (402) and the Y-shaped plate (404); the water inlet hole (406) is opened at the top of the sampling barrel (401); and the upper sealing plug (407) is fixedly The sampling barrel (401) is fixedly connected to the bottom of the Y-shaped plate (404); the piston (408) is sealingly and slidably connected to the inner wall of the sampling barrel (401); the lower sealing plug (409) is fixedly connected to the upper surface of the piston (408); the sliding hole (410) is opened in the middle of the top of the sampling barrel (401); the lower sealing plug (411) is fixedly connected to the middle position of the upper surface of the piston (408); the upper sealing plug (412) is fixedly connected to the middle position of the bottom of the Y-shaped plate (404); the connecting rod (413) is fixedly connected between the lower sealing plug (411) and the upper sealing plug (412); and the counterweight (414) is fixedly connected to the bottom of the sampling barrel (401).

3. The sampling device for water pollution monitoring according to claim 2, characterized in that: The water inlet hole (406), the upper sealing plug (407) and the lower sealing plug (409) are all provided in plurality and their positions correspond one to one. The upper sealing plug (407) and the lower sealing plug (409) are both made of rubber, and the outer diameters of the upper sealing plug (407) and the lower sealing plug (409) match the inner diameter of the water inlet hole (406).

4. The sampling device for water pollution monitoring according to claim 2, characterized in that: The upper sealing plug (412) and the lower sealing plug (411) are both made of rubber, and the outer diameters of the upper sealing plug (412) and the lower sealing plug (411) match the inner diameter of the sliding hole (410).

5. The sampling device for water pollution monitoring according to claim 2, characterized in that: The piston (408) is provided with a water outlet (8), and a sealing cover (9) is threadedly connected below the water outlet (8).

6. The sampling device for water pollution monitoring according to claim 2, characterized in that: The fixing member (5) comprises a slide plate (501), a slide groove (502), a slider (503), a slide seat (504), a permanent magnet (505), a baffle (506) and a second spring (507); The slide plate (501) is fixedly connected to the outer wall of the sampling barrel (401); the slide groove (502) is provided on the slide plate (501); the slider (503) is slidably connected to the slide groove (502); the slide seat (504) is fixedly connected to the slider (503); two slide seats (504) are provided and are symmetrically arranged; the permanent magnet (505) is fixedly connected to the side of the two slide seats (504) close to each other; the baffle (506) is fixedly connected to the end of the slide plate (501) away from the slide seat (504); the second spring (507) is fixedly connected between the baffle (506) and the slide seat (504); and when the electromagnetic ring (302) is energized, the magnetic pole of the side close to the permanent magnet (505) is opposite.

7. The sampling device for water pollution monitoring according to claim 2, characterized in that: The outer wall of the sampling barrel (401) is fixedly connected to a limiting ring (415), and the limiting ring (415) is sleeved on the outside of the connecting rope (301).

8. The sampling device for water pollution monitoring according to claim 2, characterized in that: The support member (6) comprises a lower support rod (601), an upper support rod (602), a lower clamping seat (603) and an upper clamping seat (604); The lower support rod (601) is rotatably connected to the upper surface of the sampling barrel (401), the upper support rod (602) is rotatably connected to the lower surface of the Y-shaped plate (404), the lower clamping seat (603) is fixedly connected to the top of the lower support rod (601), and the upper clamping seat (604) is fixedly connected to the bottom of the upper support rod (602).

9. The sampling device for water pollution monitoring according to claim 8, characterized in that: The lower clamping seat (603) and the upper clamping seat (604) are both made of rubber, and the lower clamping seat (603) and the upper clamping seat (604) are mutually squeezed and clamped.

10. The sampling device for water pollution monitoring according to any one of claims 6 or 8, characterized in that: The support member (6) further comprises a starter member (7), wherein the starter member (7) comprises an upper connecting ring (701), a lower connecting ring (702) and a pull rope (703); The upper connecting ring (701) is fixedly connected to the lower clamping seat (603), the lower connecting ring (702) is fixedly connected to one of the sliding seats (504), and the pull rope (703) is tied between the upper connecting ring (701) and the lower connecting ring (702).

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